linux-kernel - [PATCH 5.7 256/265] powerpc/fsl_booke/32: Fix build with CONFIG_RANDOMIZE

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Date:   Mon, 29 Jun 2020 11:18:09 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Arseny Solokha <asolokha@...kras.ru>,
        Jason Yan <yanaijie@...wei.com>, Scott Wood <oss@...error.net>,
        Michael Ellerman <mpe@...erman.id.au>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [PATCH 5.7 256/265] powerpc/fsl_booke/32: Fix build with CONFIG_RANDOMIZE_BASE

From: Arseny Solokha <asolokha@...kras.ru>

commit 7e4773f73dcfb92e7e33532162f722ec291e75a4 upstream.

Building the current 5.8 kernel for an e500 machine with
CONFIG_RANDOMIZE_BASE=y and CONFIG_BLOCK=n yields the following
failure:

  arch/powerpc/mm/nohash/kaslr_booke.c: In function 'kaslr_early_init':
  arch/powerpc/mm/nohash/kaslr_booke.c:387:2: error: implicit
  declaration of function 'flush_icache_range'; did you mean 'flush_tlb_range'?

Indeed, including asm/cacheflush.h into kaslr_booke.c fixes the build.

Fixes: 2b0e86cc5de6 ("powerpc/fsl_booke/32: implement KASLR infrastructure")
Cc: stable@...r.kernel.org # v5.5+
Signed-off-by: Arseny Solokha <asolokha@...kras.ru>
Reviewed-by: Jason Yan <yanaijie@...wei.com>
Acked-by: Scott Wood <oss@...error.net>
[mpe: Tweak change log to mention CONFIG_BLOCK=n]
Signed-off-by: Michael Ellerman <mpe@...erman.id.au>
Link: https://lore.kernel.org/r/20200613162801.1946619-1-asolokha@kb.kras.ru
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 arch/powerpc/mm/nohash/kaslr_booke.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/mm/nohash/kaslr_booke.c b/arch/powerpc/mm/nohash/kaslr_booke.c
index 4a75f2d9bf0e0..bce0e5349978f 100644
--- a/arch/powerpc/mm/nohash/kaslr_booke.c
+++ b/arch/powerpc/mm/nohash/kaslr_booke.c
@@ -14,6 +14,7 @@
 #include <linux/memblock.h>
 #include <linux/libfdt.h>
 #include <linux/crash_core.h>
+#include <asm/cacheflush.h>
 #include <asm/pgalloc.h>
 #include <asm/prom.h>
 #include <asm/kdump.h>
-- 
2.25.1